docs: def _has_attr(cls, ds, attr, concept_name, priority=BaseCheck.HIGH):
          """
          Checks for the existance of attr in ds, with the name/message using concept_name.
          """
          val = cls.std_check(ds, attr)
          msgs = []
  
          if not val:
              msgs.append("Attr '{}' (IOOS concept: '{}') not found in dataset".format(attr, concept_name))
  
          return Result(priority, val, concept_name, msgs)